Acetylene lamp



W. J. FRISBIE.

ACETYLENE LAMP.

APPLICATION FILED MAY :1, 1921.

1,42%,463. P ented Aug. 1,1922.

1720622405: (Human? ff ro'saa WILLIAM J. FRISBIE, or CHICAGO, ILLINOIS, ASSIGNQR TO Jus'rru'rn MANUFAC': Teams COMPANY, or CHICAGO, rnnmoisn CORPORATION or I InoIs.

AGETYLENE LAMP.-

Application filed May 11,

To all whom it may concern:

Be it known that, I, W'Irmmu J. Fnissm, a citizen of the United States, andv a resident of Chicago, in the county of Cook, State of Illinois, have invented: certain new and. useful Improvements in Acetylene Lamps, of which the following is a specification.

My invention relates to acetylene lamps, particularly miners acetylene cap .lamps and the object is to provide improved. means for securing the lamp supporting clamp thereto.

These miners acetylene cap, lamps are usu' ally supported on a plate secured onthe cap, the lamp having a hook for engaging in a hole provided in the plate and having also a clamping frame or arms for clampingly engaging around the sides of the plate, the lamp being thus rigidly supported. The practice heretofore has been to secure the clamping frameor arms by means of solder against the outer face of the lamp. The disadvantage of this practice is that the solden, being soft, will yield readily to abnormal pressure andthe arms or frame can be readily torn from the lamp. Another disadvantage is that the solden gives anunsightly appearance to the lamps as it soon tarnishes. i

My invention eliminates the above disadvantages. In accordance with my arrangement I insert the innerends of the clamping arms or the yoke section of a clamping frame behind a section) Of'sheet metal; on the lamp, or between metal sections on walls of the lamp, to be thus mechanicallyclamped and further, secured if desired by means of soldering, such. soldering however being on the inside so that. it will not be visible at the exterior of; the lamp. This so securely fastens the/arms or frame to the lamp that it will be impossible to pull off an arm ex.- cept by breaking it. The arrangement also eliminates solder on the outside of the lamp and gives it a neater and more practical appearance.

The various features of my invention are shown on the accompanying drawing in which Fig. 1 is a side elevational View of a miners cap lamp,

Fig. 2 is a rear elevational view of the water container part of the lamp,

Fig. 3 is a plan view of the structure shown in Fig. 2, with the bottom member Specification of Letters Patent.

I'T'atented; Aug, 1, 1 922,

1921; SeriaLNo. 468 546;

Fig. 4 is a plan view similar to Fig. 3

showing the bottom member. inplace to I clamp the clamping frame,

Fig. 5 is a sectional view on plane 5-5,, Fig. 4,

Fig. 6 is a side elevational view similar to (Fig. 2 showing a modified arrangement an Fig. 7 is a sectional view on plane 7-7 Fig. 6.

Thelamp shown comprises the water container structure A and the carbide cup. B. The water container comprises the cylindrical body part 1.0, the top 11, and the socket shaped member 12 which forms. the bottom of the container. As shown. the lower section 13 of the body part l0isconcaved or drawn inwardly a distance to receive the socket member 12 which is thread ed for receiving the upper threaded. section 1a of. the carbide cup B, aswell understood in the art.

Extending through the top .11 andthrough the lamp is the valve stem 15 controllableby the lever 16, and the plug 17 normally closes the water filler opening 18. v

Secured to the back of the water container body is the hook 19 which engages in the hole of; the lampsupporting plate (not shown) on miners"ca ps. On the front side of the water container is supported. the reflector 20.

In Figs. 1 to 5 F represents the spring clamping frame comprising the yoke section 21. and. the arms 22 extending outwardly from the ends thereof, the arms at their ends being deflected to formtlie notches 23 which receive the edges of. the plate on the miners cap, such clamping engagement of the arms together with the engagement of the hook 19 with. the plate rigidly anchoring the lamp on the cap plate. In accordance with my invention I provide the holes 24 and 25 in the wall 13 and the frame F is inserted through the holes to bring its yoke section 21 inside of the wall 13 as clearly shown in Fig. 3. The yoke section 21 is curved to almost clear the opening surrounded by the wall 13 and to overhang just sufficiently to be engaged by the threads of the socket member 12 which forms the bottom of the water container. When this socket'member is then inserteditsthrea-ils will engage with the yoke section of the clamping frame and will exert pressure thereon, such pressure mechanicallyanchoring the clamping frame inproper position (Fig. 4). Solder is then run around the space between the wall 13 and the side wall ofv the socket member 12 and the socket member is securely soldered in place to form the bottom of the water container. The solder also fills the holes 24 and 25 around the clamping frame and the solder also securesthe yoke section 21 of the frame to the adjacent walls. 'The water container is thus sealed and the'frame rigidly secured by be ing mechanically clamped between the walls 12 and 13 as well as being soldered there serted as shown in Fig. 7.

inserted after the socket member 12 has been to. The sheet metal of the lamp prevents any strain on the clamping frame arms from tearing or loosening the solder and the arms can be removed only by bending thereof until they break. Furthermore the lamp presents a much. more sightly and neat appear ance as the only solder which will show on the outside is perhaps a little bit at the holes through which the clamp frame extends. V Aspecial soldering operation is also avoided as the clamp is soldered in place at the same time that the socket section 12 is secured to the water container body.

In Figs. 6 and 7 I have shown a modified arrangement. Here, separate clamping arm members 26 and 27 are used, and the wall section13 of the lamp has the outward dc tlection or embossment 28 into whose ends the inner sections of the arms may be iii-- .hearms are inserted. and the arm ends will then be clamped between the socket member an l' the wall section 1.3, and then when solder run around in the space between the parts 12 and 13 the arms will be securely and rigidly held in their proper clamping "position. 7

I thus provide a practical, neat and efficient means for securely fast'ening'clamparms or frames to miners acetylene cap lamps. I claim as follows:

1. In a miners acetylene lamp, the com-- bination with the water container body, of a bottom member therefor, a supporting structurev extending from said container body, saidbody having an opening, the inner end of said supporting structure extending throughsaid opening to be received between the body wall and said bottom structure to be thus held in position.

2. In a miners acetylene Tcap lamp, the combination with the sheet metal body part ofthe water container for the lamp, a bottom member extending upwardly into said body part, a U-shaped clamp frame, the yoke of said frame being inside of said body part and clamped between the walls of said body partand the bottom member.

3. In a miners acetylene cap lamp, the combination of the sheet metal water con-- tainer body, a carbide cup receiving socket extended into said body to form the bottom of the water container, a Ushaped clamping frame of spring metal having its yoke section. extended into said body to be in the path of said socket member when inserted and to be thereby clamped between the socket member and the body, the outer ends of said frame forming clamping arms.

4-. In a miners acetylene cap lamp, the combination of the watercontainer part and the carbide cup, the carbide cup having a threaded neck, the water container part comprising a body part of sheetmetal and a socket part extended into the lower end of said body part and threaded to receive the threadedneck of the carbide cup, a U-shapel clamping frame of spring metal having its yoke section within the body part and projected a distance into the path of said socket part when inserted into the body part whereby said socket part will engage with said yoke section and spring it to thereby clamp it between the socket-part and the body part, said body part having holes, the ends of said frame extending through said holes to the outside of the body part and provided at their ends with clamping notches.

5. In a miners acetylene lamp, the combination with the sheet metal body having holes therethrough, of an inner frame inserted into said body to be parallel with the sides thereof, and a supporting structure I extending from the container body, the in- .ner part of said supporting structure extending through said holes to be received between the body wall and the adjacent wall of the inner frame'to be thus held in position.

In witness whereof, I hereunto subscribe my name this 9th day of May, A. D. 1921. WVILLIAM J. FRISBIE. 

